- Their ardour never relaxed .
- He just does n't know what it is to be tired .
- You should go easy , you are getting tired .
- Put on a spurt , or you 'll fall behind .
- It took a lot of energy to move the furniture .
- There is not much kick in the cocktail .
- He found it very difficult to tie the knot .
- She 's not big , but she 's strong .
- A wrong approach means a waste of effort .
- I have great trouble to keep off the men .